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Note 14 - Segment Data - Segment Inventory (Details) - USD ($) $ in Thousands		Mar. 31, 2023	Mar. 31, 2022
Inventories, net		$ 34,642	$ 24,606
Operating Segments [Member]
Inventories, net		34,642	24,606
Operating Segments [Member] | Clinical Genomics [Member]
Inventories, net		13,985	11,802
Operating Segments [Member] | Sterilization and Disinfection Control [Member]
Inventories, net		3,492	2,176
Operating Segments [Member] | Biopharmaceutical Development [Member]
Inventories, net		8,384	4,495
Operating Segments [Member] | Calibration Solutions [Member]
Inventories, net		8,781	6,133
Corporate, Non-Segment [Member]
Inventories, net	[1]	$ 0	$ 0
[1] Amortization of intellectual property is included in the calculation of gross margin by segment. Amortization pertaining to other types of intangible assets, such as customer relationships and trademarks, is included in general and administrative on the Consolidated Statements of Income. Within the table above, the depreciation and amortization costs that are included in calculating the gross margin of the noted segment are included; other costs such as amortization that is recorded to general and administrative expense is shown in corporate and other.

X

- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481372/852-10-55-10

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483467/210-10-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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